“Fetterman?” one speaker yelled from a stage near the steps of City Hall.

“Jagoff!” protesters shouted back in unison.

“Fetterman?”

“Jagoff!”

in Fetterman’s case, it describes a politician who campaigned as a Bernie Sanders–loving populist and vowed to help Democrats advance their priorities past the party’s two obstructionists, Sens. Kyrsten Sinema and Joe Manchin—only to reprise their roles once in Congress and cozy up with Republicans.

“He ran in the 2022 primaries against Joe Manchin, and now he’s become Joe Manchin,” says Mike Mikus, a longtime Democratic operative in Pennsylvania. “An unprincipled Manchin.”

He’s sided with Republicans on denying immigrants due process, voted to confirm a 2020 election denier to lead the Department of Justice, and approved a GOP budget that freed Trump to slash spending without oversight. His recent actions have enraged progressives, mystified colleagues, and alarmed former and current aides.